/ Dictionary / Index L lesser Ionic: Meaning and Definition of Find definitions for: less'er Ion'ic. Pronunciation: [key] See under(def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lesser doxology lesser omentum Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language